I don't think it was doing this before. Might have been an update or something I did.
I tried to change these settings but couldn't set values. Then tried to run the script but it didn't run.
audio - Linux Ubuntu Speakers Popping every few seconds - Super User.
Zorin Core on an old Lenovo desktop. No need for battery saving by turning off sound.
Pulseaudio needs no excuses; it does what it wants.
Uninstalled it.
Put the script in a text file and changed the extension to sh. Clicked on it and chose Run in Terminal. I think I saw it flash briefly. Also tried just Run.
Do you have alsa / Alsamixer?
Don't know what that is.
You can check with
sudo apt install alsa-base
Got the script to run. Took out the references at the top (is this SOP?). This time I got a login and it seems to have worked. Yea!
Not bad for a two week noob, including all the other stuff I fixed.
Edit: Nope, doesn't survive reboot, have to edit a file.
True... as I would not have thought it has only been Two Weeks...
Welcome to Linux Adept. 
Got: alsa-base is already the newest version
In terminal run
alsamixer
You should see your sound settings open in an interactive UI within the terminal.
I did. Don't see anything to stop audio suspending.
I see reset and clear.
And you already checked the Power Save suspension configuration?
sudo nano /etc/pulse/default.pa
Comment out this line:
Automatically suspend sinks/sources that become idle for too long
#load-module module-suspend-on-idle
systemctl restart --user pulseaudio
How do you comment out something?
BTW, the script worked until I reboot. I tried to edit alsa-base.conf to prevent that but it won't let me! I am the only person using this computer. How can I not be allowed?
Can you please outline the steps you took and what message the system gave?
Commenting out, in this case, means placing a hashtag on front of the line. A hashtag tells the system to Ignore That Line.
For example:
This line is read and adhered to by the system
#This line is exactly like the one above, but ignored by the system.
It's already got ### in front of it. You want 4 or 1?
1 is all you need... but if it is Already Commented out- then that venture is pointless.
Let's try looking at something else...
sudo nano /etc/modprobe.d/alsa-base.conf
Look for this line:
options snd-hda-intel power_save=0
If it is not there, then paste it in at the end of the file (Move to the end using arrow keys).
Then ctrl+x to exit, y to sya yes to save, then enter to save and exit.
I am not allowed to edit alsa-base.conf.
Apparently, I'm "not the owner" of this PC.
That script was supposed to edit it but didn't.
Ownership of files...
What Message did the System Display?
File is read only and I am not allowed to change.
Is Root the owner?
Try
sudo -i
To elevate to Root. If need be, you can change the file access from read only to read /write. Any of:
chmod 666 /etc/modprobe.d/alsa-base.conf
echo 'options snd-hda-intel model=mbp55' >> /etc/modprobe.d/alsa-base.conf
chmod 644 /etc/modprobe.d/alsa-base.conf